COATING COMPOSITION FOR RUNNING SURFACE OF TRACK

摘要

PURPOSE:To obtain the titled composition giving a coating film having excellent abrasion resistance and removability of deposited ice and snow from the film and applicable within a short period in the intervals of operation of trains, by adding three kinds of aggregate having different particle diameter to a binder. CONSTITUTION:The objective composition is produced by compounding (A) 100pts.wt. of acrylic syrup, a thermoplastic polyamide resin or an epoxy-polythiol binder with (B) a mixture of (i) 10-80pts.wt. of aggregate having particle diameter of 0.5-1.0mm and a Mohs hardness of >=6.5, (ii) 50-300pts.wt. of aggregate having particle diameter of 0.2-1.0mm and Mohs hardness of >=6.5 and (iii) 20-150pts.wt. of aggregate having particle diameter of <=0.1mm. A coating of a road surface having high abrasion resistance and excellent removability of deposited ice and snow from the coating can be formed within a short working period by applying the mixture with an applicator capable of controlling the coating thickness of the running surface of a track at a width wider than the width of tire. The composition is useful also for the protection of the rail surface of a new municipal transportation system.